obsolete java src folder removed

Signed-off-by: Thomas Schubert <funthomas424242@gmail.com>
project specific exceptions added

Signed-off-by: Thomas Schubert <funthomas424242@gmail.com>
wrong entity names xxxImpl changed to Verzeichnis and Datei

Signed-off-by: Thomas Schubert <funthomas424242@gmail.com>